Germany standard flange DIN 2638 welding neck flanges; nominal pressure 160

Pipe

Flange

Neck

Raised Face

Drilling

Approx.

Weight

(7.85 kg/dm3)

kg

Nominal

Size

d1

D

b

k

h1

d3

s

r1

h2

d4

f

Number

of

Holes

Bolt

Diameter

d2

ISO Series

DIN Series

10

14

100

20

70

45

28

2

4

6

40

2

4

M12

(1/2")

14

1.09

17.2

32

15

20

105

20

75

45

32

2

4

6

45

2

4

M12

(1/2")

14

1.19

21.3

34

25

30

140

24

100

58

48

2.9

4

8

65

2

4

M16

(5/8")

18

2.66

33.7

52

40

44.5

170

28

125

64

65

3.6

6

10

85

3

4

M20

(3/4")

23

4.3

48.3

70

50

57

195

30

145

75

86

4

6

10

95

3

4

M24

(7/8")

27

6.25

60.3

90

65

7.61

7.61

220

34

170

82

108

5

6

12

105

3

8

M24

(7/8")

27

8.35

80

88.9

88.9

230

36

180

86

120

6.3

8

12

125

3

8

M24

(7/8")

27

9.75

100

108

265

40

210

100

145

8

8

12

145

3

8

M27

(1")

30

14.8

114.3

150

125

146

315

44

250

115

180

10

8

14

185

3

8

M30

(1 1/8")

33

23

139.7

150

171

355

50

290

128

210

12.5

10

14

215

3

12

M30

(1 1/8")

33

32.5

168.3

-175

191

390

54

320

138

245

14.2

10

16

235

3

12

M33

(1 1/4")

36

43.5

193.7

200

216

430

60

360

140

278

16

10

16

260

3

12

M33

(1 1/4")

36

59.4

219.1

250

267

515

68

430

155

340

20

12

18

325

3

12

M39

(1 1/2")

42

94.5

273

300

318

585

78

500

175

400

22.2

12

18

375

4

16

M39

(1 1/2")

42

136

323.9